<template>
    <div :class="{ 'hidden': hidden }" class="pagination-container">
      <el-pagination
        :background="background"
        v-model:current-page="currentPage"
        v-model:page-size="pageSize"
        :layout="layout"
        :page-sizes="pageSizes"
        :pager-count="pagerCount"
        :total="total"
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
      />
    </div>
  </template>
  
<script setup lang="ts">
import { computed } from 'vue'
import { scrollTo } from '/@/utils/scroll-to'
  
const props = defineProps({
    total: {
        required: true,
        type: Number
    },
    page: {
        type: Number,
        default: 1
    },
    limit: {
        type: Number,
        default: 20
    },
    pageSizes: {
        type: Array,
        default() {
            return [10, 20, 30, 50]
        }
    },
    // 移动端页码按钮的数量端默认值5
    pagerCount: {
        type: Number,
        default: document.body.clientWidth < 992 ? 5 : 7
    },
    layout: {
        type: String,
        default: 'total, sizes, prev, pager, next, jumper'
    },
    background: {
        type: Boolean,
        default: true
    },
    autoScroll: {
        type: Boolean,
        default: true
    },
    hidden: {
        type: Boolean,
        default: false
    }
})
  
const emits = defineEmits(['update:page','update:limit','pagination'])
const currentPage = computed({
    get() {
        return props.page
    },
    set(val: number) {
        emits('update:page', val)
    }
})
const pageSize = computed({
    get() {
        return props.limit
    },
    set(val){
        emits('update:limit', val)
    }
})
function handleSizeChange(val: number) {
    if (currentPage.value * val > props.total) {
        currentPage.value = 1
    }
    emits('pagination', { page: currentPage.value, limit: val })
    if (props.autoScroll) {
        scrollTo(0, 800)
    }
}
function handleCurrentChange(val: number) {
    emits('pagination', { page: val, limit: pageSize.value })
    if (props.autoScroll) {
        scrollTo(0, 800)
    }
}
  
</script>
  
<style scoped>
.pagination-container {
background: #fff;
padding: 32px 16px;
}
.pagination-container.hidden {
display: none;
}
</style>